About: http://webisa.webdatacommons.org/274010352

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Preferably, however, this precipitate of Fe(OH)3 is removed from the water, e.g. by settling or the like, water separated therefrom being at a pH of about 3-4 and being fed to the particles for further neutralization.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com